<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Template</title>
</head>

<body>
  <!-- 主页面 -->
  <main>
  <!--  utility class (explicit) -->
  <h1 class="headline load-hidden">
    Widget Inc.
  </h1>

  <!-- style extension (implicit) --> 
  <ul class="widget-list">
     <li class="widget">1</li>
     <li class="widget">2</li>
     <li class="widget">3</li>
     <li class="widget">4</li>
     <li class="widget">5</li>
   </ul>
  </main>
  <script src="https://cdn.seo.com.cn/Scripts/jquery-1.8.2.min.js"></script>
</body>

</html>